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单词 plumb line
释义
plumb line
Word forms: plural plumb lines
N-COUNT (检查垂直度的)铅垂线 A plumb line is a piece of string with a weight attached to the end that is used to check that something such as a wall is vertical or that it slopes at the correct angle. (检查垂直度的)铅垂线
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更新时间:2025/3/29 15:58:18